package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;


@Service()
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;
//    @Autowired
//    private PasswordEncoder passwordEncoder;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void add(EmployeeDTO employeeLoginDTO) {
        Employee employee = new Employee();
        //将DTO对象拷贝到实体对象
        BeanUtils.copyProperties(employeeLoginDTO, employee);
        //设置默认密码
        employee.setPassword((PasswordConstant.DEFAULT_PASSWORD));
        //设置状态
        employee.setStatus(StatusConstant.ENABLE);
        //设置添加和更新此员工的用户
        /*
        使用aop进行自动填充
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.save(employee);

    }

    @Override
    public PageResult pageFind(EmployeePageQueryDTO employeePageQueryDTO) {
        //开启分页查询，指定页码和查询数量
        PageHelper.startPage(employeePageQueryDTO.getPage(),
                employeePageQueryDTO.getPageSize());
        Page<Employee> employeeList= employeeMapper.pageQuery(employeePageQueryDTO);
        //将结果封装为pageResult对象返回
        //employeeList.getTotal()得到查询的数量，employeeList.getResult()得到查询结果集合
        return new PageResult(employeeList.getTotal(),employeeList.getResult());
    }

    @Override
    public void changeStatus(Long id, Integer status) {
        Employee employee=new Employee();
        employee.setStatus(status);
        employee.setId(id);
        /*
        使用aop进行自动填充
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.update(employee);
    }

    @Override
    public void updateinfo(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //复制对象
        BeanUtils.copyProperties(employeeDTO, employee);
        /*
        使用aop进行自动填充
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.update(employee);
    }

    @Override
    public Employee findById(Long id) {
        return employeeMapper.findById(id);
    }
//
//    @Override
//    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
//        Employee user= employeeMapper.getByUsername(username);
//        if (user==null) {
//            throw new UsernameNotFoundException("账户不存在！");
//        }
//        return user;
//    }

//    @Override
//    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
//        Employee byUsername = employeeMapper.getByUsername(username);
//        if (byUsername==null) {
//            throw new UsernameNotFoundException("账户不存在！");
//        }
//        List<SysRole> lis=new ArrayList<>();
//        return new User(
//                byUsername.getUsername(),
//                byUsername.getPassword(),// 数据库中的密码应为哈希值
//                lis
//
//        );
//    }

}
